/Engine/Plugins/Experimental/PCG/Source/PCG/Public/Metadata/Accessors/PCGAttributeAccessorKeys.h
Retrieve in the given argument pointer of the wanted type at the index 0. Need to be a supported type, such asFPCGPoint, PCGMetadataEntryKey or void.
true if it succeeded, false otherwise. (like num == 0, unsupported type or read only)
template<typename ObjectType> bool GetKey ( ObjectType *& OutObject )